气候变化领域集成服务门户(CCPortal): Potential in paleoclimate reconstruction of modern pollen assemblages from natural and human-induced vegetation along the Heilongjiang River basin, NE China

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DOI	10.1016/j.scitotenv.2020.141121
	Potential in paleoclimate reconstruction of modern pollen assemblages from natural and human-induced vegetation along the Heilongjiang River basin, NE China
	Han, Dongxue; Gao, Chuanyu; Li, Yunhui; Liu, Hanxiang; Cong, Jinxin; Yu, Xiaofei; Wang, Guoping
通讯作者	Wang, GP (通讯作者)
发表日期	2020
ISSN	0048-9697
EISSN	1879-1026
卷号	745
英文摘要	The relationships among modern pollen, vegetation, climate and human activities can help improving the reliability of reconstruction of past vegetation, regional climate and human activities based on fossil pollen records. We used a dataset of 114 surface soil pollen samples from natural vegetation (wetlands, forests and grasslands) and human-induced vegetation (farmlands and residences) along the Heilongjiang River basin in northeast China to explore the relationships among modern pollen, vegetation, climate and human activities. The results indicated that surface pollen assemblages differentiated modern vegetation well in natural and human-induced vegetation types. The wetlands were mainly composed of Cyperaceae, along with Artemisia, weeds Poaceae (<35 mu m) and Sangtiisorba. The forests were predominated by Pinus and Betula. Artemisia, weeds Poaceae (<35 mu m) and Chenopodiaceae were the most important pollen taxa in grasslands. The farmlands were characterized by Artemisia, Aster, Chenopodiaceae, cereal Poaceae (>35 mu m) and Taraxacum. The pollen assemblages of residences were composed of weeds Poaceae (<35 mu m), Chenopodiaceae and Sax. Ordination analyses based on main pollen taxa and climatic variables were used to determine the relationships between pollen and climate, suggesting the surface pollen assemblages were primarily influenced by the mean annual temperature (Tann) in northeast China. The statistical performance of transfer function between pollen and Tann were well indicating the modem pollen assemblages could be reliably used in paleoclimate reconstruction in our study area. Furthermore, human-induced vegetation had high frequencies of human-companion pollen taxa, such as Chenopocliaceae, Aster, Taraxacum and cereal Poaceae (>35 mu m). Pollen concentrations of human-induced vegetation were lower than natural vegetation types, which could be used as an indicator of human influence intensity. (C) 2020 Elsevier B.V. All rights reserved.
关键词	SURFACE LAKE-SEDIMENTS NORTHWESTERN CHINA NORTHEAST CHINA CLIMATE PLATEAU FOREST ACCUMULATION MOUNTAINS IMPACTS HISTORY
英文关键词	Heilongjiang River basin; High latitudes; Transfer function; Pollen-vegetation-climate; Human activities
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000579365600070
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259765
推荐引用方式 GB/T 7714	Han, Dongxue,Gao, Chuanyu,Li, Yunhui,et al. Potential in paleoclimate reconstruction of modern pollen assemblages from natural and human-induced vegetation along the Heilongjiang River basin, NE China[J]. 中国科学院青藏高原研究所,2020,745.
APA	Han, Dongxue.,Gao, Chuanyu.,Li, Yunhui.,Liu, Hanxiang.,Cong, Jinxin.,...&Wang, Guoping.(2020).Potential in paleoclimate reconstruction of modern pollen assemblages from natural and human-induced vegetation along the Heilongjiang River basin, NE China.SCIENCE OF THE TOTAL ENVIRONMENT,745.
MLA	Han, Dongxue,et al."Potential in paleoclimate reconstruction of modern pollen assemblages from natural and human-induced vegetation along the Heilongjiang River basin, NE China".SCIENCE OF THE TOTAL ENVIRONMENT 745(2020).